Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4699466 | Optical RF filtering system | Robert W. Brandstetter, Adrian R. Doucette, Herman Kaplan, Nils J. Fonneland | 1987-10-13 |
| 4645300 | Fourier plane recursive optical filter | Robert W. Brandstetter, Nils J. Fonneland | 1987-02-24 |
| 4522466 | Recursive optical filter system | Robert W. Brandstetter, Adrian R. Doucette | 1985-06-11 |